Training guide

How to sprint faster: acceleration, top speed and the training that works

Sprinting faster means two things: accelerating harder from a standstill, and reaching a higher top speed, which even elite sprinters hold for only about 10 to 30 m. Speed comes from pushing hard into the ground, and it's trainable: people who aren't elite sprinters typically cut their sprint times by about 1.5 to 3% over 6 to 12 weeks. On a 4-second 30 m sprint, that's about 0.06 to 0.12 seconds (our arithmetic).

What works is sprinting at full effort with full rest, plus strength and jump training. Sleds help the first 20 m but weren't clearly better than plain sprints for most people, and drills are a warm-up rather than a proven way to get faster.

This guide covers what sets your speed, what the trials show, how to run a speed session, how to time yourself properly and how to look after your hamstrings, with a sprint speed workout that has a 3D demo of every move. For a faster 5K or 10K, see our guide to running faster.

The short version

Two jobs: accelerate, then hold top speed

Better sprinters accelerate for longer, and even they hold their top speed for only about 10 to 30 m.

Source 1

Speed comes from the ground

Faster runners reach higher top speeds by pushing harder into the ground, not by moving their legs faster. When you accelerate, pushing backwards matters more than how hard you push in total.

Sources 2, 3

You can get faster

Sprint at full effort with full rest, and add strength and jump training. People who aren't elite typically cut their sprint times by about 1.5 to 3% over 6 to 12 weeks, though most studies were in young men who play team sports.

Sources 4, 5, 6

Sleds and drills matter less than people think

Sleds improved the first 20 m, but for most people no more than the same sprints without a sled. No study has tested drills on their own, so use them to warm up.

Sources 7, 8, 9, 1, 6

Time it properly

Use timing gates or a phone app that films your run. A stopwatch reads about 0.2 seconds fast, and that can't be reliably corrected.

Sources 10, 11

Look after your hamstrings

About half of football's match hamstring strains happen while sprinting. Build speed over weeks, sprint regularly and keep the Nordic curl in your week: it builds lowering strength, though whether it halves injuries is less certain than often claimed.

Sources 12, 13, 14, 15

What sprint speed is, and what it depends on

Acceleration and top speed

Acceleration is speeding up from a standing or crouched start, and top speed is the fastest you can run. A flying sprint, timed after a build-up run, trains and tests top speed.

Source 1

Pushing into the ground

In 33 people tested on a treadmill that measured their ground forces, top speeds ranged from 6.2 to 11.1 metres a second (about 22 to 40 km/h, our arithmetic). The fastest pushed down about 1.26 times harder, while the time their legs took to swing through the air didn't differ.

Source 2

Pointing the push forwards

In 12 men, how far forwards they directed their push while accelerating mattered more for their 100 m performance than how much force they produced in total.

Source 3

Step length and step rate

Your speed is your step length times your step rate, and the two trade off: athletes with longer steps tended to take them less often. Copying an elite sprinter's long stride tends to make an ordinary runner slower.

Sources 16, 1

The arms

Folding the arms across the chest slowed 30 m sprints by only 1.6% (4.90 against 4.82 seconds), so the arms mainly keep you balanced. Their exact role is still poorly studied.

Sources 17, 18

How fast people run

In Usain Bolt's 9.58-second 100 m, his fastest 20 m (from 60 to 80 m) took 1.61 seconds: about 12.4 metres a second, or 45 km/h (our arithmetic from the review's split times). In the lab group above, from recreational runners to sprinters, top speeds were about 22 to 40 km/h.

Sources 1, 2

What the evidence says

Sprint training worksEmerging evidence

Across 48 studies of 1,485 people, training that included sprinting cut sprint times by about 3% on average. Strength and jump training helped most over distances beyond about 30 m, and combining methods helped most over the first 10 m.

Source 4

Most methods help, and none is clearly bestEmerging evidence

In athletes from football, rugby and similar sports, trained for about 8 weeks at two sessions a week, most training methods gave moderate gains over the first 10 m, and no single method was clearly best. Small studies with good results seemed more likely to be published, so the true gains may be smaller.

Source 6

Elite sprinters improve slowlyStrong evidence

The world's top 100 sprinters improved by only 0.1 to 0.2% a year in their early 20s, and national-level sprinters by 1.3 to 1.4% a year. The further you are from your limit, the more room you have.

Source 1

Strength carries overEmerging evidence

Across 15 studies, those with bigger gains in squat strength tended to show bigger gains in speed, and sprint times improved by 3.11% on average. Stronger half squats also went with faster 10 and 30 m sprints in 17 elite footballers, an association.

Sources 5, 19

Jump training helps, especially jumping forwardsEmerging evidence

Across 26 studies, jump training improved sprinting most in programmes of under 10 weeks with at least 15 sessions and more than 80 jumps a session, using jumps that travel forwards, such as bounds. Adding weight to the jumps gave no extra benefit.

Source 20

Sleds: better than nothing, not clearly better than sprintingMixed evidence

Across 13 studies, sled training improved acceleration by a moderate amount, but no more than the same sprints without a sled, and its effect on top speed wasn't significant. Reviews in team-sport players and in young footballers found no difference from plain sprinting either.

On the other side, a 2025 analysis of 49 studies found moderate sleds (20 to 50% of body weight) and very heavy ones (80% or more) did beat plain sprinting, mainly in trained athletes, while light sleds or none are probably enough for recreational players. In 50 high school athletes, sled pushes at three loads improved 5 to 20 m times more than plain sprints over 8 weeks. The most consistent benefit is acceleration over 20 m or less.

Sources 7, 8, 21, 9, 22, 23

Heavy sleds don't wreck your techniqueEmerging evidence

In 32 professional footballers, 9 weeks of heavy sled sprints improved 10 to 30 m times without changing sprint technique beyond measurement error. In a pilot trial in 16 amateur players, a very heavy sled (80% of body weight) improved how well they pushed backwards more than plain sprints did.

Sources 24, 25

HillsEmerging evidence

In 54 students, 8 weeks of combined uphill and downhill sprinting raised top speed by 4.3%, against 1.7% for sprinting on the flat, and uphill sprints helped hockey players in a small trial (7 against 7 players). A slope also caps your speed, which makes hills a gentler way in.

Sources 26, 27, 1

Weighted vests and limb weightsMixed evidence

They slow you down while you wear them, and there's no good evidence of a lasting benefit. We found no trial of sprint parachutes.

Sources 28, 29

DrillsMixed evidence

Drills such as skips don't copy the movements of sprinting, and no study has tested them on their own. A wall drill opened an 8-week speed programme that improved 20 and 30 m sprints in 19 young female footballers, but the drill wasn't tested by itself. Use drills in your warm-up to rehearse positions.

Sources 6, 1, 30

A speed session, step by step

Our editorial session, scaled down from elite practice (Haugen 2019), with the 90% rule from our sprint intervals move and the strength and jump evidence above (Seitz 2014; de Villarreal 2012).

  1. Be able to run comfortably for 30 minutes before you sprint, and keep sprints to about 90% effort for the first 4 weeks.
  2. Sprint once or twice a week, 2 or 3 days apart, when you're fresh: not the day after hard leg training or the day before a match.
  3. Warm up for about 15 minutes: easy jogging, skips, the wall drill and the arm drill, then 3 build-up runs to about 70, 80 and 90% of top speed.
  4. Accelerations: 4 to 6 sprints of 10 to 20 m from a standing start. Walk back, then rest another 1 to 2 minutes.
  5. Top speed: 3 flying sprints, building up over 20 m and then running 20 m fast, with 3 to 4 minutes of walking between them.
  6. Stop when your sprints get slower or anything feels tight: quality is the point, not tiredness.
  7. Lift twice a week (squats or split squats, a hip hinge, calf raises and Nordic curls) and add bounds and broad jumps.
  8. Time a 10 m sprint and a flying 20 m every 4 to 6 weeks, the same way each time.

Loading the 3D figure…

Gets into position, then repeats the movement. Technical checks passed; qualified exercise review is pending.

The movement on the figure: Sprint intervals

How much, and how often

What elite sprinters do

Acceleration sessions: sprints of 10 to 50 m at more than 98% effort, 2 to 7 minutes' rest and 100 to 300 m in all. Top-speed sessions: flying sprints of 10 to 30 m after a 20 to 40 m build-up, 4 to 15 minutes' rest and 50 to 150 m in all, with 48 to 72 hours between hard sessions. That's best practice gathered in a review, not tested in trials.

Source 1

Our scaled-down version

About 100 to 200 m of fast running a session is plenty for most people: our workout uses 5 accelerations of 15 m and 3 flying sprints of 20 m, about 135 m. Walk back and rest 1 to 2 minutes more after short accelerations, and 3 to 4 minutes after flying sprints. These distances and rests are our editorial starting point, at the low end of elite practice and with shorter rests.

Source 1

Build up over weeks

Keep to about 90% effort for the first 4 weeks, as our sprint intervals move advises, then go to full effort. After that, add a sprint or two before you add distance: our workout goes from 5 and 3 sprints to 6 and 4 (our editorial progression).

Strength and jumps

Two strength sessions a week, stopping each set 2 to 3 reps short of failure, plus bounds and broad jumps. Elite sprinters lift on the day after a speed session or later on the same day; for everyone else, that's our editorial starting point.

Sources 5, 20, 1

Young people

A meta-analysis of sprint training in boys suggests up to 16 sprints of about 20 m, twice a week, with at least 90 seconds between them. UK Athletics, as quoted in the elite review, starts young or new sprinters with 20 m runs from a crouched start and 2 minutes' rest, and a 20 m build-up into a 10 m flying sprint with about 4 minutes' rest.

Sources 31, 1

Warm-up drills

Rehearsal, not speed training: 2 × 20 m of skipping, 2 × 15 m of fast skipping, 3 rounds of the wall drill, 15 seconds of the arm drill on each knee and 3 build-up runs (our editorial doses, from each move's entry).

Sprints, hills and sleds

Sprints first, with full rest. Hills are a gentler way in (6 to 8 runs of 8 to 10 seconds, walking down), and a sled should be light enough that you still move fast.

Strength and springs

Twice a week: Nordic curls 2 or 3 × 3 to 6, squats 3 or 4 × 4 to 6, split squats 3 × 6 to 8 each leg, Romanian deadlifts 3 × 8 to 10, calf raises 3 × 10 to 15 each leg, bounds 3 to 5 × 20 m and broad jumps 4 × 3, from each move's entry and our workouts.

How to time your sprints

Our editorial protocol, built on the timing studies below (Haugen 2016; Fristrup 2024).

  1. Use timing gates or a phone app that films your run at high speed, not a stopwatch.
  2. Keep everything the same each time: how you start, what starts the clock, the surface, your shoes and, outdoors, the wind.
  3. Warm up fully, as for a speed session.
  4. Run 2 or 3 sprints over 10 m and 30 m, or a flying 20 m, with 3 to 4 minutes between them.
  5. Keep your best time, and test again every 4 to 6 weeks.

Loading the 3D figure…

Gets into position, then repeats the movement. Technical checks passed; qualified exercise review is pending.

The movement on the figure: Sprint intervals

How accurate is sprint timing?

Stopwatches read fastStrong evidence

Over 40 yards (about 37 m), hand timing read 0.22 to 0.26 seconds faster than electronic timing, with errors of about 0.15 seconds either way, and it can't be reliably corrected. Over 10 to 20 m, don't hand-time at all.

Sources 10, 11, 32

The set-up matters more than you'd thinkStrong evidence

Different starting positions and ways of triggering the clock can change times by more than years of training would. Compare only times taken the same way.

Source 32

Timing gatesEmerging evidence

In elite handball players, gate times varied from test to test by 2.8% over 5 m, 1.9% over 10 m and 1.5% over 20 m, so the shortest sprints are the noisiest. Over 40 yards, the smallest change worth noticing was 0.12 seconds.

Sources 33, 10

Phone appsEmerging evidence

Apps that film your run at high speed agreed almost perfectly with timing gates in 12 sprinters, and another was about 0.01 seconds out in 5 people. The samples were small.

Sources 34, 35

Looking after your hamstrings

Sprinting is when they goEmerging evidence

In 342 hamstring strains in football analysed on video, about half (48.8%) happened while sprinting.

Source 12

Nordic curls build lowering strengthStrong evidence

Across 13 studies, Nordic curls raised eccentric hamstring strength (strength while the muscle lengthens under load) by a large amount and lengthened the muscle fibres within 6 weeks or more. Four weeks was too short.

Source 14

Low volumes work, but keep goingEmerging evidence

Low weekly volumes worked as well as high ones. In 20 men, the fibres lengthened by 23 to 24% and strength rose by 28 to 34%, but the fibre gains reversed within 2 weeks of stopping.

Sources 14, 36

Nordic curls and injuriesEmerging evidence

Programmes that include the Nordic curl were linked with about half as many hamstring injuries, and two large football trials found big falls, but when only properly randomised trials are pooled the effect is uncertain.

Across 15 studies of 8,459 athletes, programmes including the Nordic curl had about half the rate of hamstring injuries, and the two largest football trials found about 70% fewer (our arithmetic). But only 5 of those studies assigned people to the Nordic itself at random; re-analysed with a sixth trial, the effect was inconclusive, and a 2026 analysis of 11 football trials found the Nordic on its own had an uncertain effect, at low to very low certainty.

Sources 37, 38, 39, 15, 40

Nordic curls and speedEmerging evidence

Across 17 studies, Nordic curl training made 10 m sprints slightly faster, by about 0.06 seconds.

Source 41

Warm-up programmesStrong evidence

The FIFA 11+ warm-up, which includes Nordic curls, cut football injuries by 39% across trials. For hamstring injuries alone, it cut them by about 45% in the 2026 analysis, but at low certainty.

Sources 42, 43, 40

Sprint regularlyEmerging evidence

In one squad of 37 Gaelic footballers, players who reached more than 95% of their top speed in training had fewer leg injuries, and both too little and too much exposure raised the risk. Sprinting regularly, rather than now and then, may be part of the protection (our reading of one study).

Source 13

A Nordic routine

Keep the Nordic curl in your week: 2 or 3 sets of 3 to 6, twice a week, is a reasonable start (our editorial dose). The FIFA 11+ builds from 3 to 5 reps to 7 to 10, then 12 to 15, and our hamstring and groin workout follows a 10-week build. Expect sore hamstrings for the first week or two.

Sources 43, 14

Genes, age, sex and young people

Genes and trainingStrong evidence

Sprinting is heavily dependent on genes, but the things that drive it, such as power, technique and the ability to repeat sprints, are trainable. Elite sprinters peak at about 25 to 26.

Source 1

Women and menStrong evidence

Women's top speed is about 10% lower than men's, and world-record gaps in sprinting are about 8 to 12%. The training is the same.

Sources 1, 44

AgeEmerging evidence

Masters sprinters were 5 to 7% slower per decade, and more so from about 65 to 70, mainly through shorter steps and longer ground contacts. Sprint records fall less steeply with age than endurance records. These compare different people at different ages, rather than following the same people.

Sources 45, 46

Young peopleMixed evidence

Boys responded well to sprint training, but studies disagree about which stage of growth responds best, and speed develops with biological maturity rather than age. Keep sprints short, with plenty of rest and a coach.

Sources 31, 47, 48, 49

Workouts to follow

The sprint speed workout is the session above. The hamstring and groin workout has the 10-week Nordic build, and the sport warm-ups add speed work to your training.

Sprint speed workout: drills, accelerations and flying sprints

A 45-minute speed session: running drills, five short accelerations and three flying sprints with full rest, then Nordic curls and calf raises.

45 minIntermediate11 movesCardio machine, A wall

Hamstring and groin injury prevention

The Nordic hamstring and Copenhagen adduction programmes from the football trials: a 10-week build, three adductor levels, then once a week in season.

15 minIntermediate6 movesA wall, An anchor point

FIFA 11+ warm-up

FIFA's 11+ injury prevention warm-up as its manual sets it out: running drills, strength, balance and jumping at three levels, then faster running.

20 minBeginner20 movesCardio machine, A wall

American football warm-up: run, move, land and accelerate

A 15-minute American football warm-up: jog, skips and shuffles, leg swings and lunges, bridges and band walks, neck holds, landings, accelerations and turns.

15 minBeginner16 movesCardio machine, A wall

Plyometrics for runners

A 20-minute hop and bound session for runners: ankle bounces to pogo hops, one-leg hops and bounding, building foot contacts slowly over 10 weeks.

20 minIntermediate8 movesCardio machine

Hamstring workout: Romanian deadlifts, curls and Nordics

A 35-minute gym hamstring workout: Romanian deadlifts for the hip, seated leg curls for the knee, single-leg Romanian deadlifts, then Nordic curls when ready.

35 minIntermediate7 movesA dumbbell, Strength machine

Hill and stair conditioning

Stair or hill climbs with the walk down as recovery, then a loaded walk with your rucksack, building towards the hills, pack and days of your trip.

40 minBeginner5 movesA step, Something with weight

Strength workout for rugby players: legs, upper body, hamstrings and neck

A 55-minute gym session for rugby: jump squats and chest throws, heavy squats, bench press, Romanian deadlifts, rows, Nordic lowers, shoulder and neck work.

55 minIntermediate15 movesA band, Medicine ball

When to stop and get help

Call 999 now (911 in the US)

Stop and call 999 for:

  • Chest pain or discomfort that doesn't go away (it can feel like squeezing or pressure), pain that spreads to your arms, neck, jaw, stomach or back, or chest pain with sweating, feeling sick, light-headedness or breathlessness.
  • Someone who faints while exercising.
  • A pounding, fluttering or irregular heartbeat that doesn't go away, or comes with chest pain, breathlessness or feeling faint.
  • Severe difficulty breathing: gasping, choking or not able to get words out.

Sources 50, 51, 52, 53, 54

A hamstring injury

A sharp pain at the back of your thigh while sprinting is the typical sign, sometimes with a snapping feeling or a pop if it's severe. Get help from NHS 111 (in the US, urgent care) if it's very painful or getting worse, there's a lot of swelling or bruising, it hurts to walk or stand, or it isn't getting better after looking after it yourself. Our hamstring strain guide covers the rest.

Source 55

Stop sprinting for the day

At the first tightness at the back of your thigh, in your calf or in your groin, stop rather than doing one more sprint. Stop too if you feel dizzy, sick or far more breathless than usual.

See a GP about your heart

  • You have ever fainted, have chest pain that comes and goes, or have palpitations that keep coming back or last more than a few minutes.
  • Breathlessness, chest pain, palpitations, light-headedness or blackouts that come on with exertion: these can be signs of an inherited heart condition such as hypertrophic cardiomyopathy.
  • Someone in your family died suddenly under the age of 35: relatives are entitled to heart screening on the NHS.

Sources 51, 50, 52, 56, 57, 58

Myths

"You can't get faster: sprinters are born"Emerging evidence

Genes matter a lot, but power and technique are trainable, and people who aren't elite typically cut their sprint times by about 1.5 to 3%.

Sources 1, 4, 5

"Longer strides make you faster"Emerging evidence

Faster runners push harder into the ground rather than reaching further, and copying an elite stride makes most people slower.

Sources 2, 16, 1

"Drills make you faster"Mixed evidence

No study has tested drills on their own, and they don't copy sprinting's movements. Use them to warm up, then sprint.

Sources 6, 1

"Parachutes, ankle weights and weighted vests make you faster"Mixed evidence

Vests and limb weights slow you while you wear them, with no good evidence of a lasting benefit, and we found no parachute trial.

Sources 28, 29

"Sleds beat sprinting"Mixed evidence

For most people, sleds were no better than the same sprints without one, though moderate or very heavy sleds helped trained athletes more.

Sources 7, 8, 9

"Heavy sleds ruin your technique"Emerging evidence

In professional footballers, heavy sled training improved sprint times without changing sprint technique beyond measurement error.

Source 24

"Static stretching before sprints kills your speed"Strong evidence

Only long holds, of 60 seconds or more per muscle, cost much, and when a moving warm-up followed there was no clear effect. If you like to stretch, keep the holds short and do your drills and build-up runs afterwards.

Sources 59, 60

"Nordic curls halve hamstring injuries"Emerging evidence

Programmes that include the Nordic curl were linked with about half as many hamstring injuries, and two large football trials found big falls, but when only properly randomised trials are pooled the effect is uncertain. It's still worth doing for the lowering strength it builds.

Sources 37, 38, 39, 15, 40

Questions people ask

How can I sprint faster?

Sprint once or twice a week at full effort with full rest, and add strength and jump training: squats, hip hinges, calf raises, Nordic curls, bounds and broad jumps. People who aren't elite typically cut their sprint times by about 1.5 to 3% over 6 to 12 weeks.

How can I improve my acceleration?

Sprint 10 to 20 m from a standing start with full rest, leaning forwards and pushing the ground back behind you. Strength and jump training help too. Sleds and hills are options, though for most people sleds were no better than the same sprints without one.

How long does it take to get faster at sprinting?

Most training studies ran for about 8 weeks at two sessions a week. Expect about 1.5 to 3% faster over 6 to 12 weeks if you're not already well trained, and less if you are.

Can you get faster if you're not naturally fast?

Yes. Speed is heavily genetic, but power and technique are trainable. Elite sprinters gain little each year because they're near their limit, and most people have more room.

Do sprint drills make you faster?

No trial has tested drills on their own, and they don't copy the movements of sprinting. Use them in your warm-up to rehearse positions, then sprint.

Is a sled push good for speed?

It's one option for acceleration. Sled training improved the first 20 m, but for most people no more than the same sprints without a sled, while moderate or very heavy sleds helped trained athletes more. Load it lightly enough that you can still move fast.

How fast can a human run?

Usain Bolt reached about 12.4 metres a second, or 45 km/h, during his 9.58-second 100 m, worked out from his split times. In a lab group ranging from recreational runners to sprinters, top speeds were about 22 to 40 km/h.

How do I time my sprints?

Use timing gates or a phone app that films your run at high speed. A stopwatch reads about 0.2 seconds fast and can't be reliably corrected. Keep the start, the surface and your shoes the same each time, and keep your best of 2 or 3 runs.

How should I use my arms when sprinting?

Swing them from the shoulders, elbows bent and hands relaxed, without crossing your body. They mainly keep you balanced: folding the arms across the chest slowed 30 m sprints by only 1.6%.

Do Nordic curls make you faster?

Slightly: across 17 studies, they cut 10 m times by about 0.06 seconds, and they build hamstring strength within 6 weeks. Whether they halve hamstring injuries is less certain than often claimed, but they're still worth keeping in your week.

How can I run faster for football or rugby?

Train acceleration over 10 to 20 m with full rest, add strength and jump training, and sprint regularly rather than now and then. In football and rugby players, most training methods improved the first 10 m. Keep a warm-up programme such as the FIFA 11+, which cut football injuries by 39%.

How can children sprint faster?

With short, coached sprints and plenty of rest: boys responded well to sprint training in studies, and one review suggests up to 16 sprints of about 20 m twice a week, with at least 90 seconds between them. Speed also develops with maturity, so compare children with their own past times rather than with friends.

Sources

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  2. Weyand 2000 · Faster top speeds come from greater ground forces, not quicker leg movements, in 33 runners (lab study, J Appl Physiol)
  3. Morin 2011 · The direction of ground force and sprint performance in 12 men (lab study, Med Sci Sports Exerc)
  4. Rumpf 2016 · Sprint training methods and sprint times over different distances: 48 studies (review with pooled effects, J Strength Cond Res)
  5. Seitz 2014 · Gains in lower-body strength carry over to sprint speed: 15 studies (meta-analysis, Sports Med)
  6. Nicholson 2021 · Training short sprints in football-code athletes: 121 studies (meta-analysis, Sports Med)
  7. Alcaraz 2018 · Resisted sled training and sprint performance: 13 studies (meta-analysis, Sports Med)
  8. Ward 2024 · Resisted sprint training in team-sport players: 21 studies (meta-analysis, Sports Med)
  9. Xu 2025 · Resisted sprint training by load: 49 studies (meta-analysis, Scand J Med Sci Sports)
  10. Mann 2015 · Hand and electronic timing of the 40-yard sprint in 81 college players (validity study, J Strength Cond Res)
  11. Hetzler 2008 · Stopwatches against electronic timing for sprints (reliability study, J Strength Cond Res)
  12. Xia 2026 · How hamstring strains happen in football: 342 injuries on video (meta-analysis, Front Public Health)
  13. Malone 2017 · Training load, top-speed running and injury in 37 Gaelic footballers (cohort study, J Sci Med Sport)
  14. Cuthbert 2020 · Nordic hamstring exercise volume, strength and muscle structure: 13 studies (meta-analysis, Sports Med)
  15. Impellizzeri 2021 · The Nordic hamstring exercise trials re-analysed, randomised trials only (re-analysis, J Clin Epidemiol)
  16. Hunter 2004 · Step length and step rate in sprinting, in 36 athletes (lab study, Med Sci Sports Exerc)
  17. Brooks 2022 · Folding the arms and 30 m sprint times in 17 athletes (crossover study, Gait Posture)
  18. Macadam 2018 · The role of the arms in sprint running (review, Strength Cond J)
  19. Wisløff 2004 · Squat strength, sprint times and jump height in 17 elite soccer players (cross-sectional study, BJSM)
  20. de Villarreal 2012 · Plyometric training and sprint performance: 26 studies (meta-analysis, J Strength Cond Res)
  21. Fernández-Galván 2022 · Vest and sled sprint training in young soccer players (meta-analysis, J Strength Cond Res)
  22. Cahill 2020 · Eight weeks of sled-push sprints at three loads in 50 high school athletes (trial, Scand J Med Sci Sports)
  23. Bruno 2026 · Resisted sprint training and sprint performance (umbrella review, Sports Med)
  24. Lahti 2020 · Heavy sled training and sprint technique in 32 professional soccer players (controlled trial, PeerJ)
  25. Morin 2017 · Very heavy sled training in 16 amateur soccer players (pilot trial, Int J Sports Physiol Perform)
  26. Paradisis 2009 · Uphill and downhill sprint training vs flat sprinting in 54 students (trial, Int J Sports Physiol Perform)
  27. Jakeman 2016 · Four weeks of uphill sprints in 14 field hockey players (trial, J Strength Cond Res)
  28. Bertochi 2024 · Weighted vests and wearable weights for sprinting: 25 studies (meta-analysis, Sci Rep)
  29. Feser 2020 · Wearable leg weights and sprint running: 10 studies (systematic review, Eur J Sport Sci)
  30. Lee 2024 · An 8-week speed, agility and quickness programme in 19 under-20 female footballers (randomised trial, PLoS One)
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  32. Haugen 2016 · Sprint performance monitoring: methods and practice (review, Sports Med)
  33. Fristrup 2024 · Test-retest reliability of jump and sprint tests in elite female handball players (reliability study, Eur J Appl Physiol)
  34. Romero-Franco 2017 · Sprint times from an iPhone app against photocells in 12 sprinters (validation study, Eur J Sport Sci)
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  38. Petersen 2011 · A Nordic hamstring programme in 942 football players in 50 teams (cluster randomised trial, Am J Sports Med)
  39. van der Horst 2015 · The Nordic hamstring exercise in 579 amateur footballers (randomised trial, Am J Sports Med)
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  43. Soligard 2008 · The FIFA 11+ warm-up and injuries in 1,892 young female footballers (cluster randomised trial, BMJ)
  44. Sandbakk 2018 · Sex differences in world-record performances (analysis, Int J Sports Physiol Perform)
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  49. Kalata 2026 · How running speed develops with maturity in 117 young footballers (longitudinal study, Biol Sport)
  50. NHS · Chest pain
  51. NHS · Fainting
  52. NHS · Heart palpitations
  53. NHS · Shortness of breath
  54. MedlinePlus · Heart palpitations (US National Library of Medicine)
  55. NHS · Hamstring injury
  56. Cardiac Risk in the Young · Cardiac screening
  57. Cardiac Risk in the Young · Hypertrophic cardiomyopathy (HCM)
  58. British Heart Foundation · Hypertrophic cardiomyopathy
  59. Behm 2016 · Acute effects of muscle stretching on performance, range of motion and injury (systematic review, Appl Physiol Nutr Metab)
  60. Kay 2012 · Acute static stretching and maximal muscle performance: 106 studies (systematic review, Med Sci Sports Exerc)

Exercise education, not a personal prescription, and clinical review of these guides is pending. Check with a GP before starting hard training if you have a heart condition, chest pain, dizziness or breathlessness when active, and stop for sharp or increasing pain. Health disclaimer.